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The purpose of this study is to examine the impact of public governance quality on tax evasion levels in old (pre-2004) and new (post-2004) European Union (EU) members before and after the 2004 EU-enlargement.

This study uses panel data of 28 EU countries over the period 1996-2015. Tax evasion is measured using an updated version of the shadow economy size based on the light intensity, as calculated by (Medina and Schneider, 2018). The World Bank’s worldwide governance indicators are used as a measure of public governance.

The results indicate that new EU members have higher tax evasion levels compared to the old ones before and after the 2004 EU enlargement. The findings also report that the public governance quality is superior in old members throughout the 1996-2015 period. Furthermore, the authors found that after the EU enlargement, tax evasion levels decreased in both EU groups; however, the authors noticed an improvement in the public governance quality in new members and a deterioration in old ones. Additional analysis confirms the impact of public governance quality as an effective tool for reducing tax evasion behavior in both EU groups before and after the EU enlargement.

The findings are potentially useful for EU policymakers in identifying the most effective tools that can minimize tax evasion levels in EU countries. Additionally, the results are alarming as they show the negative consequences of the EU enlargement in old EU members. Thus, policymakers should consider them when setting their rules and regulations to reduce the significant differences between both EU groups to prevent member states from potentially exiting the EU.

To the best of the knowledge, this is the first study that examines the tax evasion behavior and public governance quality in the EU before and after the EU enlargement.

The purpose of this study is to examine the relationship between tax evasion and COVID-19 public health risk exposure in both high-corruption countries and low-corruption countries.

This study uses cross-sectional data from 138 countries. Tax evasion is measured using the shadow economy size (light intensity approach) as calculated by (Medina and Schneider, 2018). The SolAbility COVID-19 public health risk exposure index (CPHRE) is used to measure COVID-19 health risk. Also, the corruption perception index from transparency international is used for measuring the level of corruption.

This study finds that the level of tax evasion is positively related to CPHRE. Also, the results revealed a positive relationship between corruption and CPHRE. Furthermore, this study examined the moderation effect of corruption. The results indicate that the positive relationship between tax evasion and public health risk exposure is significant in low-corruption countries, but it is insignificant in high-corruption countries. These results imply that the severity of corruption can increase COVID-19 health risk exposure more than tax evasion.

Our findings are alerting the policymakers for the negative noneconomic consequences of tax evasion and corruption. It provides evidence that tax evasion and corruption can increase CPHRE.

According to the author’s knowledge, this is the first study that examines the relationship between tax evasion and COVID-19 risk and that tests the moderation effect of corruption.